US10072740B2 - Transmission for hybrid vehicle - Google Patents

Transmission for hybrid vehicle Download PDF

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Publication number
US10072740B2
US10072740B2 US14/856,357 US201514856357A US10072740B2 US 10072740 B2 US10072740 B2 US 10072740B2 US 201514856357 A US201514856357 A US 201514856357A US 10072740 B2 US10072740 B2 US 10072740B2
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Prior art keywords
planetary gear
gear set
rotary
rotary element
shaft
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US14/856,357
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US20160333986A1 (en
Inventor
Chul Min Ahn
Seok Joon Kim
Jun Young Ha
Baek Yu Kim
Sung Gon Byun
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Hyundai Motor Co
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Hyundai Motor Co
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Assigned to HYUNDAI MOTOR COMPANY reassignment HYUNDAI MOTOR COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AHN, CHUL MIN, BYUN, SUNG GON, HA, JUN YOUNG, KIM, SEOK JOON, KIM, BAEK YU
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
    • F16H3/72—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously
    • F16H3/727—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path
    • F16H3/728—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion with a secondary drive, e.g. regulating motor, in order to vary speed continuously with at least two dynamo electric machines for creating an electric power path inside the gearing, e.g. using generator and motor for a variable power torque path with means to change ratio in the mechanical gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/36—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings
    • B60K6/365—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the transmission gearings with the gears having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K6/383—One-way clutches or freewheel devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/44—Series-parallel type
    • B60K6/445—Differential gearing distribution type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
    • B60K2006/381—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches characterized by driveline brakes
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S903/00—Hybrid electric vehicles, HEVS
    • Y10S903/902—Prime movers comprising electrical and internal combustion motors
    • Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
    • Y10S903/904—Component specially adapted for hev
    • Y10S903/909—Gearing
    • Y10S903/91—Orbital, e.g. planetary gears
    • Y10S903/911—Orbital, e.g. planetary gears with two or more gear sets

Definitions

  • the present invention generally relates to a transmission for a hybrid vehicle. More particularly, the present invention relates to the structure of a power split parallel-type hybrid transmission.
  • Power split parallel-type hybrid transmissions can be designed to divide power generated by an engine into a mechanical power flow based on planetary gears and an electric power flow based on a motor, a generator, and a battery. It is possible to operate the engine independently of an output shaft, freely turn on or off the engine during traveling, and enable an electric vehicle mode. In addition, it is possible to efficiently operate the engine due to the effect of an electrically variable transmission (EVT) enabled by two motor generators without any power-disconnecting mechanism.
  • EDT electrically variable transmission
  • a transmission for a hybrid vehicle obtain a sufficient amount of drive force while using a smaller motor by obtaining a sufficient reduction gear ratio. This can consequently reduce the weight of a vehicle and increase the energy efficiency of the vehicle, thereby improving the fuel efficiency of the vehicle, such that the appropriate and efficient high-speed driving performance of the vehicle can be obtained.
  • Various aspects of the present invention are directed to providing a transmission for a hybrid vehicle able to obtain a sufficient amount of drive force while using a smaller motor by obtaining a sufficient reduction gear ratio. This can consequently reduce the weight of a vehicle and increase the energy efficiency of the vehicle, thereby improving the fuel efficiency of the vehicle, such that the appropriate and efficient high-speed driving performance of the vehicle can be obtained.
  • a transmission for a hybrid vehicle may include an input shaft into which power generated by an engine is input, an output shaft disposed coaxially with the input shaft, a first planetary gear set, a second planetary gear set, and a third planetary gear set disposed between the input shaft and the output shaft to transmit rotational force, each of the first to third planetary gear sets having first, second and third rotary elements, a first motor generator and a second motor generator each connected to the first to third rotary elements of the first to third planetary gear sets, and at least three shifting elements each connected to the first to third rotary elements of the first to third planetary gear sets, in which the first rotary element of the first planetary gear set may be continuously connected to the first motor generator, and may be fixable by a first shifting element of the shifting elements, the second rotary element of the first planetary gear set may be continuously connected to the input shaft, and the third rotary element of the first planetary gear set may be continuously connected to the third rotary element of the second planetary gear set, the first rotary element of the first
  • the first planetary gear set, the second planetary gear set, and the third planetary gear set may be sequentially arranged along an axial direction of the input shaft and the output shaft.
  • the third shifting element fixing the second rotary element of the second planetary gear set may be a first brake disposed between the second rotary element of the second planetary gear set and a transmission casing
  • the second shifting element fixing the first rotary element of the second planetary gear set may be a second brake disposed between the first rotary element of the second planetary gear set and the transmission casing
  • the first shifting element fixing the first rotary element of the first planetary gear set may be an overdrive brake disposed between the first rotary element of the first planetary gear set and the transmission casing.
  • the transmission may further include a rotation restraining element on the input shaft, the rotation restraining element being able to restrain rotation of the input shaft.
  • the rotation restraining element may be a one-way clutch disposed between the input shaft and a transmission casing, allowing the input shaft to rotate only in a single direction.
  • a transmission for a hybrid vehicle may include a first planetary gear set, a second planetary gear set, and a third planetary gear set, each of which has first, second and third rotary elements, three shifting elements able to variably provide frictional force, a first motor generator and a second motor generator, and first, second, third, fourth, fifth, and sixth rotary shafts connected to the three rotary elements of the planetary gear sets, in which the first rotary shaft may be an input shaft directly connected to the second rotary element of the first planetary gear set, the second rotary shaft may be directly connected to the first rotary element of the first planetary gear set and the first motor generator, the third rotary shaft may be directly connected to the first rotary element of the second planetary gear set, the fourth rotary shaft may be directly connected to the second rotary element of the second planetary gear set and the third rotary element of the third planetary gear set, the fifth rotary shaft may be directly connected to the first rotary element of the third planetary gear set and the second motor generator
  • the transmission for a hybrid vehicle can obtain a sufficient amount of drive force while using a smaller motor by obtaining a sufficient reduction gear ratio. This can consequently reduce the weight of a vehicle and increase the energy efficiency of the vehicle, thereby improving the fuel efficiency of the vehicle, such that the appropriate and efficient high-speed driving performance of the vehicle can be obtained.
  • vehicle or “vehicular” or other similar terms as used herein is inclusive of motor vehicles in general such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, watercraft including a variety of boats and ships, aircraft, and the like, and includes hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles and other alternative fuel vehicles (e.g., fuel derived from resources other than petroleum).
  • a hybrid vehicle is a vehicle that has two or more sources of power, for example, both gasoline-powered and electric-powered vehicles.
  • FIG. 1 illustrates the configuration of an exemplary transmission for a hybrid vehicle according to the present invention.
  • FIG. 2 is an operation mode table in which operation modes that can be realized by the exemplary transmission illustrated in FIG. 1 are presented.
  • FIG. 3 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an EV 1 mode.
  • FIG. 4 is a lever diagram in which the state of FIG. 3 is expressed as a lever.
  • FIG. 5 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an EV 2 mode.
  • FIG. 6 is a lever diagram in which the state of FIG. 5 is expressed as a lever.
  • FIG. 7 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an HEV 1 mode.
  • FIG. 8 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an HEV 2 mode.
  • FIG. 9 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an OD 1 mode.
  • FIG. 10 illustrates the state in which the exemplary transmission illustrated in FIG. 1 realizes an OD 2 mode.
  • a transmission for a hybrid vehicle includes an input shaft IN into which power from an engine ENG is input, an output shaft OUT coaxial with the input shaft N, a first planetary gear set PG 1 , a second planetary gear set PG 2 , and a third planetary gear set PG 3 disposed between the input shaft IN and the output shaft OUT to transmit rotational force, each of the first to third planetary gear sets PG 1 to PG 3 having three rotary elements, a first motor generator MG 1 and a second motor generator MG 2 each connected to the three rotary elements of the first to third planetary gear sets PG 1 to PG 3 , and at least three shifting elements each connected to the three rotary elements of the first to third planetary gear sets PG 1 to PG 3 .
  • the first rotary element of the first planetary gear set PG 1 is continuously connected to the first motor generator MG 1 , and can be fixed by one of the shifting elements.
  • the second rotary element of the first planetary gear set PG 1 is continuously connected to the input shaft N.
  • the third rotary element of the first planetary gear set PG 1 is continuously connected to the third rotary element of the second planetary gear set PG 2 , the second rotary element of the third planetary gear set PG 3 , and the output shaft OUT.
  • the first rotary element of the second planetary gear set PG 2 can be fixed by another one of the shifting elements.
  • the second rotary element of the second planetary gear set PG 2 can be fixed by the other one of the shifting elements, and is continuously connected to the third rotary element of the third planetary gear set PG 3 .
  • the first rotary element of the third planetary gear set PG 3 is continuously connected to the second motor generator MG 2 .
  • the first planetary gear set PG 1 , the second planetary gear set PG 2 , and the third planetary gear set PG 3 are sequentially arranged along the axial direction of the input shaft N and the output shaft OUT.
  • the shifting element enabling the second rotary element of the second planetary gear set PG 2 to be fixed is a first brake BK 1 disposed between the second rotary element of the second planetary gear set PG 2 and a transmission casing CS.
  • the shifting element enabling the first rotary element of the second planetary gear set PG 2 to be fixed is a second brake BK 2 disposed between the first rotary element of the second planetary gear set PG 2 and the transmission casing CS.
  • the shifting element enabling the first rotary element of the first planetary gear set PG 1 to be fixed is an overdrive brake OD/B disposed between the first rotary element of the first planetary gear set PG 1 and the transmission casing CS.
  • a rotation restraining element able to restrain rotation of the input shaft IN is disposed on the input shaft IN.
  • the rotation restraining element is implemented as a one-way clutch OWC disposed between the input shaft IN and the transmission casing CS, allowing the input shaft IN to rotate only in a single direction.
  • the rotation restraining element may be implemented as a two-way clutch or a brake. When the engine does not operate, the rotation restraining element serves to prevent the engine from reversely rotating.
  • the first rotary element, the second element, and the third element of the first planetary gear set PG 1 are a first sun gear 51 , a first carrier C 1 , and a first ring gear R 1 .
  • the first rotary element, the second element, and the third element of the second planetary gear set PG 2 are a second sun gear S 2 , a second carrier C 2 , and a second ring gear R 2 .
  • the first rotary element, the second element, and the third element of the third planetary gear set PG 3 are a third sun gear S 3 , a third carrier C 3 , and a third ring gear R 3 .
  • the transmission for a hybrid vehicle includes a first planetary gear set PG 1 , a second planetary gear set PG 2 , and a third planetary gear set PG 3 , each of which has three rotary elements; three shifting elements able to variably provide frictional force, a first motor generator MG 1 and a second motor generator MG 2 ; and six rotary shafts connected to the three rotary elements of the planetary gear sets.
  • the first rotary shaft RS 1 is the input shaft directly connected to the second rotary element of the first planetary gear set PG 1 .
  • the second rotary shaft RS 2 is directly connected to the first rotary element of the first planetary gear set PG 1 and the first motor generator MG 1 .
  • the third rotary shaft RS 3 is directly connected to the first rotary element of the second planetary gear set PG 2 .
  • the fourth rotary shaft RS 4 is directly connected to the second rotary element of the second planetary gear set PG 2 and the third rotary element of the third planetary gear set PG 3 .
  • the fifth rotary shaft RS 5 is directly connected to the first rotary element of the third planetary gear set PG 3 and the second motor generator MG 2 .
  • the sixth rotary shaft RS 6 is the output shaft OUT directly connected to the third rotary element of the first planetary gear set PG 1 , the third rotary element of the second planetary gear set PG 2 , and the second rotary element of the third planetary gear set PG 3 .
  • the first brake BK 1 is disposed between the fourth rotary shaft RS 4 and the transmission casing CS
  • the second brake BK 2 is disposed between the third rotary shaft RS 3 and the transmission case CS
  • the overdrive brake DO/B is disposed between the second rotary shaft RS 2 and the transmission casing CS.
  • the first planetary gear set PG 1 , the second planetary gear set PG 2 , and the third planetary gear set PG 3 are sequentially arranged along the axial direction of the input shaft IN and the output shaft OUT.
  • FIG. 3 and FIG. 4 illustrate the state in which the transmission according to the present invention realizes an EV 1 mode.
  • the engine is stopped, and the rotation restraining element can operate to prevent the engine from rotating reversely. Since only the first brake BK 1 from among the shifting elements is activated to fix the fourth rotary shaft RS 4 , the second sun gear S 2 and the third ring gear R 3 are fixed. Consequently, power generated by the motor generator(s) is output to the output shaft OUT after being reduced by the second ring gear R 2 and the third carrier C 3 .
  • FIG. 5 and FIG. 6 illustrate the state in which an EV 2 mode is realized.
  • the engine is stopped, and only the second brake BK 2 is activated to fix the third rotary shaft RS 3 and the second sun gear S 2 .
  • Power generated by the second motor generator MG 2 is reduced by a reduction ratio smaller than that in the EV 1 mode. Consequently, output power having a higher speed is outputted to the output shaft OUT.
  • the present invention provides a configuration able to reduce power generated by the second motor generator by a two-stage gear ratio. It is therefore possible to obtain an intended level of output power of a vehicle while reducing the size of the second motor generator. This can consequently reduce the weight of the vehicle and increase the energy efficiency of the vehicle, thereby significantly improving the fuel efficiency of the vehicle.
  • FIG. 7 illustrates the state in which an HEV 1 mode is realized.
  • power generated by the second motor generator MG 2 is in the state in which only the first brake BK 1 is activated.
  • the engine ENG generates power, a portion of which is transmitted to the output shaft OUT, and the rest of which is transmitted to the first motor generator MG 1 , which in turn generates electricity.
  • FIG. 8 illustrates the state of an HEV 2 mode.
  • power generated by the second motor generator MG 2 is transmitted to the output shaft OUT in the state in which only the second brake BK 2 is activated.
  • power simultaneously provided by the engine ENG diverges to the output shaft OUT and the first motor generator MG 1 .
  • FIG. 9 illustrates an overdrive 1 (OD 1 ) mode.
  • OD 1 overdrive 1
  • both the first brake BK 1 and the overdrive brake OD/B are activated, power generated by the second motor generator MG 2 is reduced and subsequently transmitted to the output shaft OUT along the same paths as in FIG. 3 .
  • the first sun gear 51 is fixed, power generated by the engine ENG is directly outputted to the output shaft OUT after being increased by the first ring gear R 1 .
  • FIG. 10 illustrates an OD 2 mode.
  • both the second brake BK 2 and the overdrive brake OD/B are activated, power generated by the second motor generator MG 2 is reduced and subsequently transmitted to the output shaft OUT along the same paths as in FIG. 5 .
  • Power generated by the engine ENG is directly outputted to the output shaft OUT after being increased by the first ring gear R 1 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Structure Of Transmissions (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
US14/856,357 2015-05-14 2015-09-16 Transmission for hybrid vehicle Active 2037-03-14 US10072740B2 (en)

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CN107839464A (zh) * 2017-10-25 2018-03-27 哈尔滨东安汽车发动机制造有限公司 一种混合动力自动变速器驱动系统
KR102487186B1 (ko) * 2017-12-28 2023-01-10 현대자동차 주식회사 하이브리드 차량용 동력전달장치
CN110816250B (zh) * 2018-08-10 2021-01-26 广州汽车集团股份有限公司 混合动力驱动系统及混合动力汽车
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DE102015117133A1 (de) 2016-11-17
DE102015117133B4 (de) 2022-06-02
KR101655674B1 (ko) 2016-09-08
CN106143130A (zh) 2016-11-23
CN106143130B (zh) 2020-02-28

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